When people are old, it will inevitably lead to a decline in their eyesight, and they will gradually develop difficulties in reading or working in close quarters. This is presbyopia. Presbyopia is common in older people. How do you see things with presbyopia? Magnifying glass PK reading glasses, which one would you choose? Or what do you want your parents to choose?
Many people think that there is not much difference between the two. In fact, this is a big misunderstanding. Many old people like to use a magnifying glass to read newspapers and books. In fact, this is not good for their eyes.
Although magnifiers and reading glasses are convex lenses that can enlarge objects, there are many differences between them. Presbyopic glasses are aimed at the eyesight of elderly people and are worn according to the specific conditions of human eyes. It can not only enlarge the object but also maintain vision and protect the eyes. However, the magnifying glass is just an ordinary convex lens. It is not tailored to the special conditions of human eyes, nor does it have the role of protecting the eyes. Long-term use can lead to eye irritation and headaches.
Although the amplification effects of the two are basically the same, but perhaps you do not know, the general magnifying glass, if converted into reading glasses, there will be 1000 to 2000 degrees. This is the "connivance" of your vision. When you want to wear a pair of reading glasses, you can imagine a high degree of vision. You can't even match your glasses. Therefore, in addition to temporary occasions and special occasions, the elderly must not use the magnifying glass as a reading glasses, so as not to hurt the eyes.
Many people think that there is not much difference between the two. In fact, this is a big misunderstanding. Many old people like to use a magnifying glass to read newspapers and books. In fact, this is not good for their eyes.
Although magnifiers and reading glasses are convex lenses that can enlarge objects, there are many differences between them. Presbyopic glasses are aimed at the eyesight of elderly people and are worn according to the specific conditions of human eyes. It can not only enlarge the object but also maintain vision and protect the eyes. However, the magnifying glass is just an ordinary convex lens. It is not tailored to the special conditions of human eyes, nor does it have the role of protecting the eyes. Long-term use can lead to eye irritation and headaches.
Although the amplification effects of the two are basically the same, but perhaps you do not know, the general magnifying glass, if converted into reading glasses, there will be 1000 to 2000 degrees. This is the "connivance" of your vision. When you want to wear a pair of reading glasses, you can imagine a high degree of vision. You can't even match your glasses. Therefore, in addition to temporary occasions and special occasions, the elderly must not use the magnifying glass as a reading glasses, so as not to hurt the eyes.
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